11/30/18

√(a+b√3)=13/(4+√3)
√(a+b√3)=13/(4+√3) where a and b are integers, find, without using a calculator
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11/30/18

The sum of the digits of a certain two-digit number is 9. When you reverse its digits you increase the number by 45. What is the number?
My teacher said that we should use a equation. For all of my other homework questions, they were using the elimination method. I don't know how to use those numbers by writing 2 equations.
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11/29/18

Can you form a triangle with side lengths 3, 6, 10? Explain.
Can you form a triangle with side lengths 3, 6, 10? Explain. No. The two short sides do not have a sum greater than the longest side. Yes. The two short sides have a sum greater than the longest... more
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11/29/18

Find the distance of a line

Line ℓ has equation y=x–5. Find the distance between ℓ and the point  T(-7,4).
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11/29/18

Find a formula for the exponential function passing through the points (-2, 2/9) and (1,6)
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11/29/18

Use completing the square to rewrite the equation in the form (x-h)^2 + (y-k)^2 = r^2. State the center (h,k) and radius (r) of the circle.

2x^2 + 2y^2 + 4x + 8y - 20 = 0
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11/28/18

If a1=4, a2 ​=3, and a_n=a_{n-1}+2a_{n-2}, then find the value of a6.
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11/28/18

From where does this - ve sign come from?

Let θ=545θ=2702θ+3θ=2702θ=270-3θsin(2θ)=sin(270-3θ)sin(2θ)= -cos(3θ)From where does - ve sign come from? . 270-3θ will be in 2quad where sin is +ve.
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11/28/18

Whats the x-intercept for the equation 3x+4y-6z=12
Write answer in the form (x,y,z)
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11/28/18

A square base box

The making of an open top box from a 20 inch by 20 inch sheet of metal. write a formula for the volume of your new box. What reaction should be placed on the domain of this function?
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11/28/18

Find a is y = 3(a+2)x^2 + 6ax + (4-3a) has no zeros.
Working our please!Step by step..Thank you!
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11/28/18

Use differentials to approximate square root of 26
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11/28/18

Find the missing value so that the line passing through the points has the given slope (7, 1) and (x, 4); m= 3/4
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11/28/18

h(x)=-2x^3 on [x, x+h]
Find the rate of change for the expression:h(x)=-2x^3 with the interval [x, x+h]
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R

11/27/18

Is 42 a prime Or a composite
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11/26/18

assume that all variables are implicit functions of time t. find the indicated rate .

x^2+2y^2+6y=9 , dx/dt =3 when x=3 and y=-3 ;find dy/dt 
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11/26/18

Question: y=x^2 SIN (3x)
y=x2 sin(3x)= 2x SIN (3x) + x^2 (3cos(3x)) ---> i'm confused how to get the 3 in front of cos= 2x SIN (3x) +3x^2 cos (3x)
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11/26/18

Find the quadratic function that has vertex (-5, -10) and whose graph goes through the point (-12, -353)
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11/26/18

Write an equation for the parabola that passes through (4, 3) and has x-intercepts of −1 and 5.
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11/25/18

Introduction to the function

If f(x+1)-f(x)=2x+1,find the value of f(3)-f(1).
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11/22/18

Which of the following inequalities is true for all valie of x

A) 1/x^2 >0B) 1/x^3 >0C) 1/x^2+1>0D)1/x^3+1>0
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11/22/18

dy/dx=√ (1 − y ^2). find d^2y/dx^2
struggling with this problem because of the implicit differentiation.
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11/22/18

cartesian to polar χ²-2y²=4, I can´t understand
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11/22/18

How do I know if a line is parallel intersecting or coincident and also if it has many solutions or not?
2x=10y+146x-2y=2x+28
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11/21/18

dy/dx=y [ √ 1 − y ^2 ]. find d^2y/dx^2
im having slight trouble with this one
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